Bug 735036 - Check for OOM in debug only method. r=luke

js/public/HashTable.h

@@ -384,7 +384,7 @@ class HashTable : private AllocPolicy
         mutationCount(0)
     {}
 
-    bool init(uint32_t length)
+    MOZ_WARN_UNUSED_RESULT bool init(uint32_t length)
     {
         /* Make sure that init isn't called twice. */
         JS_ASSERT(table == NULL);

js/src/jsgc.cpp

@@ -4193,7 +4193,8 @@ StartVerifyBarriers(JSRuntime *rt)
     trc->edgeptr = (char *)trc->root;
     trc->term = trc->edgeptr + size;
 
-    trc->nodemap.init();
+    if (!trc->nodemap.init())
+        return;
 
     /* Create the root node. */
     trc->curnode = MakeNode(trc, NULL, JSGCTraceKind(0));